What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

Delta is the most popular carrier operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Sydney from Louisville according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of April 2026.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$549 Cheap Flights from Louisville to Sydney in 2026

Q: What is the typical price of a round-trip flight between Louisville and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,544 to $1,310. The lowest price recently found on this route was $1,259.

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Find the cheapest flights from Louisville to Sydney

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11:12 am - 6:50 am

SDF

SYD

29h 38m

2 stops

9:15 am - 9:55 am

SYD

SDF

38h 40m

2 stops

$1,259Delta

Sat, May 30 - Sat, Jun 6

3:41 pm - 7:00 am

SDF

SYD

25h 19m

2 stops

9:30 am - 8:01 pm

SYD

SDF

24h 31m

2 stops

$1,333United Airlines

Tue, Jun 9 - Wed, Jun 17

3:25 pm - 7:00 am

SDF

SYD

25h 35m

2 stops

9:30 am - 8:23 pm

SYD

SDF

24h 53m

2 stops

$1,334United Airlines

Tue, Jun 9 - Wed, Jun 17

3:25 pm - 6:55 am

SDF

SYD

25h 30m

2 stops

10:20 am - 8:23 pm

SYD

SDF

24h 03m

2 stops

$1,422United Airlines

Tue, Jun 9 - Wed, Jun 17

3:41 pm - 7:00 am

SDF

SYD

25h 19m

2 stops

10:20 am - 7:02 pm

SYD

SDF

22h 42m

2 stops

$1,423United Airlines

Tue, Jun 9 - Wed, Jun 17

8:00 am - 7:00 am

SDF

SYD

33h 00m

3 stops

9:30 am - 8:01 pm

SYD

SDF

24h 31m

2 stops

$1,433United Airlines

Sat, May 30 - Sat, Jun 6

3:37 pm - 7:00 am

SDF

SYD

25h 23m

2 stops

10:20 am - 10:31 pm

SYD

SDF

26h 11m

2 stops

$1,521United Airlines

Wed, May 6 - Sun, May 10

3:30 pm - 6:55 am

SDF

SYD

25h 25m

2 stops

9:30 am - 8:17 pm

SYD

SDF

24h 47m

2 stops

$1,522United Airlines

Wed, May 6 - Sun, May 10

8:06 am - 6:55 am

SDF

SYD

32h 49m

2 stops

10:20 am - 10:22 pm

SYD

SDF

26h 02m

2 stops

$1,523United Airlines

Wed, Sep 16 - Sun, Sep 20

3:25 pm - 7:00 am

SDF

SYD

49h 35m

2 stops

9:30 am - 10:22 pm

SYD

SDF

26h 52m

2 stops

$1,538United Airlines

Wed, Aug 26 - Sat, Sep 5

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets

United Airlines

Apr 23

SDF3:36 pmLouisville Intl

25h 19m

2 stops

SYD6:55 amSydney Kingsford Smith

May 1

SYD9:30 amSydney Kingsford Smith

26h 29m

2 stops

SDF9:59 pmLouisville Intl

$1,261

United Airlines

Jun 8

SDF3:25 pmLouisville Intl

25h 30m

2 stops

SYD6:55 amSydney Kingsford Smith

Jun 15

SYD9:30 amSydney Kingsford Smith

24h 31m

2 stops

SDF8:01 pmLouisville Intl

$1,333

United Airlines

Jun 9

SDF3:25 pmLouisville Intl

25h 35m

2 stops

SYD7:00 amSydney Kingsford Smith

Jun 17

SYD9:30 amSydney Kingsford Smith

24h 53m

2 stops

SDF8:23 pmLouisville Intl

$1,334

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

Qantas Airways

Aug 26

SDF5:29 pmLouisville Intl

23h 26m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 5

SYD12:00 pmSydney Kingsford Smith

24h 17m

1 stop

SDF10:17 pmLouisville Intl

$1,915

Qantas Airways

Aug 26

SDF5:29 pmLouisville Intl

25h 11m

2 stops

SYD8:40 amSydney Kingsford Smith

Sep 5

SYD12:00 pmSydney Kingsford Smith

24h 17m

1 stop

SDF10:17 pmLouisville Intl

$1,953

Qantas Airways

Aug 26

SDF5:29 pmLouisville Intl

25h 21m

2 stops

SYD8:50 amSydney Kingsford Smith

Sep 5

SYD12:00 pmSydney Kingsford Smith

24h 17m

1 stop

SDF10:17 pmLouisville Intl

$1,954

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 5/30

11:12 am-6:50 am

2 stops29h 38m

Sydney Kingsford Smith

Sat 6/6

9:15 am-9:55 am

2 stops38h 40m

$1,259

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

3:41 pm-7:00 am

2 stops25h 19m

Sydney Kingsford Smith

Wed 6/17

9:30 am-8:01 pm

2 stops24h 31m

$1,333

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

3:25 pm-7:00 am

2 stops25h 35m

Sydney Kingsford Smith

Wed 6/17

9:30 am-8:23 pm

2 stops24h 53m

$1,334

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

3:25 pm-6:55 am

2 stops25h 30m

Sydney Kingsford Smith

Wed 6/17

10:20 am-8:23 pm

2 stops24h 03m

$1,422

Quickest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

3:41 pm-7:00 am

2 stops25h 19m

Sydney Kingsford Smith

Wed 6/17

10:20 am-7:02 pm

2 stops22h 42m

$1,423

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 5/30

8:00 am-7:00 am

3 stops33h 00m

Sydney Kingsford Smith

Sat 6/6

9:30 am-8:01 pm

2 stops24h 31m

$1,433

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 5/6

3:37 pm-7:00 am

2 stops25h 23m

Sydney Kingsford Smith

Sun 5/10

10:20 am-10:31 pm

2 stops26h 11m

$1,521

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 5/6

3:30 pm-6:55 am

2 stops25h 25m

Sydney Kingsford Smith

Sun 5/10

9:30 am-8:17 pm

2 stops24h 47m

$1,522

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 9/16

8:06 am-6:55 am

2 stops32h 49m

Sydney Kingsford Smith

Sun 9/20

10:20 am-10:22 pm

2 stops26h 02m

$1,523

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 8/26

3:25 pm-7:00 am

2 stops49h 35m

Sydney Kingsford Smith

Sat 9/5

9:30 am-10:22 pm

2 stops26h 52m

$1,538

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

In general, August is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,232. If you are unable to visit Sydney during the month of August, then departing from Louisville during the month October is also very affordable. Most momondo users find prices during this month for around $1,301.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 23% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time	25h 19m
Direct flights	None

The fastest flight from Louisville to Sydney takes 25h 19m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

Frequently asked questions about flying from Louisville to Sydney

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 25h 19m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of April 2026.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (76% of total bookings). The next most popular airline is Delta (24%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $973	Free Cancellation	Rating 7.4 9,604 reviews		Search United Airlines flights
Delta	PriceFrom $985	Free Cancellation	Rating 7.9 8,422 reviews		Search Delta flights

Parramatta

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Katoomba

Wollongong

Penrith

Leura

Randwick

Coogee

Lithgow

Manly

Cronulla

Charlestown

Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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Cheap flights from Louisville to Sydney from $549

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Louisville to Sydney

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

Can stopping save me money on Louisville to Sydney flights?

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

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Direct flights

Frequently asked questions about flying from Louisville to Sydney

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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